Scouring is the pretreatment process of wet processing technology. Scouring is the process by which natural impurities (oil, wax, gum, fat etc) as well as added impurities (during fabrication process) are removed completely as possible. Especially hydrophobic character which is present in the fibre of the fabric is removed by this process.
Objectives of Scouring
- To remove impurities from the textile materials.
- To improve absorbency of textile materials without undergoing physical and chemical damage.
- To produce clean and hydrophilic effect.
Effect of Scouring
- Saponifiable oils and free fatty acids are converted into soaps.
- Pectose and pectin are changed into soluble salts of pectic acid.
- Proteins are hydrolysed into soluble degradation products.
- Mineral matters are dissolved an the water.
- Unsaponiafiable oils and waxes are emulsified by the soaps formed from saponification.
- Dust particles are removed and held in suspension.
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